The week in pictures: 8 March 2013

British angler Steve Townson achieved a lifelong ambition when he landed this massive wild arapaima estimated at 250lbs from Middle River Essequibo in Guyana, South America. Steve, who has travelled the world catching exotic fish and who runs UK-based company Amazon-Angler.com - a company specialising in South American angling holidays - caught the mighty fish, plus another weighing around 150lb, on a whole 2lb piranha bait. "The arapaima is one of the world's biggest and mightiest freshwater fish and to catch them in the wild is a rare privilege," said Steve.Picture: Gareth Purnell / Rex Features